1
Safety
1.1
Action-related warnings
Classification of action-related warnings
The action-related warnings are classified in
accordance with the severity of the possible
danger using the following warning signs and
signal words:
Warning symbols and signal words
Danger!
Imminent danger to life or risk of
severe personal injury
Danger!
Risk of death from electric shock
Warning.
Risk of minor personal injury
Caution.
Risk of material or environmental
damage
1.2
Intended use
There is a risk of injury or death to the user or
others, or of damage to the product and other
property in the event of improper use or use
for which it is not intended.
The electrical immersion heater is used to
heat the standby section on the VIH R 300 -
500 and VIH S 300 - 500 domestic hot water
cylinder. It is specially designed as back-up
heating.
Intended use includes the following:
– observance of accompanying operating,
installation and servicing instructions for
the product and any other system compon-
ents
– installing and fitting the product in accord-
ance with the product and system approval
– compliance with all inspection and main-
tenance conditions listed in the instruc-
tions.
Intended use also covers installation in ac-
cordance with the IP class.
Any other use that is not specified in these
instructions, or use beyond that specified in
this document shall be considered improper
use. Any direct commercial or industrial use
is also deemed to be improper.
0020230754_00 0020230734 Installation instructions
Caution.
Improper use of any kind is prohibited.
1.3
General safety information
1.3.1 Risk caused by inadequate
qualifications
Applicability: Not for Russia
The following work must only be carried out
by competent persons who are sufficiently
qualified to do so:
Applicability: Russia
The following work must only be carried out
by Vaillant-certified competent persons who
are sufficiently qualified to do so:
– Set-up
– Dismantling
– Installation
– Start-up
– Inspection and maintenance
– Repair
– Decommissioning
▶ Observe all instructions that are included
with the product.
▶ Proceed in accordance with the current
technology.
▶ Observe all applicable directives, stand-
ards, laws and other regulations.
1.3.2 Risk of death from electric shock
There is a risk of death from electric shock if
you touch live components.
Before commencing work on the product:
▶ Disconnect the product from the power
supply by switching off all power supplies
at all poles (electrical partition with a con-
tact opening of at least 3 mm, e.g. fuse or
line protection switch).
▶ Secure against being switched back on
again.
▶ Check that there is no voltage.
1.3.3 Risk of material damage caused by
frost
▶ Do not install the product in rooms prone
to frost.
Safety 1
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